pixeleistä

A pixel, short for picture element, is the smallest controllable element of a picture represented on a screen. Pixels are arranged in a grid to form a complete digital image. Each pixel has a single color value at any given moment. The color of a pixel is typically represented using a digital value, such as RGB (Red, Green, Blue) for color displays, where combinations of these primary colors create a vast spectrum of hues.

The number of pixels in an image or display is referred to as its resolution. For example, a 1920x1080 resolution image contains 1920 pixels horizontally and 1080 pixels vertically, totaling over 2 million pixels. Higher resolution generally means more detail can be displayed, as there are more individual points of color to define the image. The density of pixels on a display is measured in pixels per inch (PPI). A higher PPI indicates that pixels are packed more closely together, resulting in a sharper and smoother image, often making individual pixels imperceptible to the human eye.

When an image is displayed, the computer or device processing the image determines the color of each individual pixel based on the image data. This process allows for the creation of complex and dynamic visuals, from static photographs to animated videos and interactive graphics. Pixels are the fundamental building blocks of all digital visual content we see on screens.